2165882975 has 12 divisors (see below), whose sum is σ = 2802464976. Its totient is φ = 1657370880.

The previous prime is 2165882963. The next prime is 2165882987. The reversal of 2165882975 is 5792885612.

It is an interprime number because it is at equal distance from previous prime (2165882963) and next prime (2165882987).

It is not a de Polignac number, because 2165882975 - 2⁶ = 2165882911 is a prime.

It is a super-2 number, since 2×2165882975² = 9382098122789701250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1882802 + ... + 1883951.

It is an arithmetic number, because the mean of its divisors is an integer number (233538748).

Almost surely, 2^2165882975 is an apocalyptic number.

2165882975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2165882975 is a deficient number, since it is larger than the sum of its proper divisors (636582001).

2165882975 is a wasteful number, since it uses less digits than its factorization.

2165882975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766786 (or 3766781 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 53.

The square root of 2165882975 is about 46539.0478523143. The cubic root of 2165882975 is about 1293.8333136542.

The spelling of 2165882975 in words is "two billion, one hundred sixty-five million, eight hundred eighty-two thousand, nine hundred seventy-five".